4.4-magnitude quake strikes in mountains near Bakersfield
1 hour, 6 minutes ago
BAKERSFIELD, Calif. - A moderate earthquake shook a mountainous area near Bakersfield, Calif., early Thursday, just hours after a quake some 230 miles to the southeast.
The U.S. Geological Survey said the 4.4-magnitude quake struck at 1:11 a.m. and was centered 12 miles south-southeast of the resort town of Lake Isabella and 35 miles east-northeast of Bakersfield.
There were no immediate reports of injuries or damage.
Stephanie Canning said she was the only one in the Lake Isabella bar where she works who felt the quake.
"I was sitting there and I saw the karaoke box shake, and I felt the ground move about three times," she said.
The quake hit barely four hours after a 4.2-magnitude temblor outside of Palm Springs.
Global Earthquake Watch
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Re: Global Earthquake Watch
CBS13: What Is Causing The Recent Earthquakes?
Reporting Elyce Kirchner
SACRAMENTO (CBS13) ― More than a thousand quakes have rumbled California and Nevada in the last month. CBS13 asks the question – What is causing the quakes?
It's been a busy week at the California Geological Survey. And with hundreds of earthquakes reported in California and Nevada this week, sure enough, when there's shaking there are theories.
"The depletion of the oil that is causing some potential quakes," says one scientist.
While earthquakes are caused when energy is released from fault lines, geologists Chris Wills says the quakes aren't uncommon or even connected, although they can be triggered.
"In several cases where people have been pumping things into the ground," says Wills.
But experts are still mystified by the swarm of quakes surrounding Reno, the strongest registering at 4.7.
"The earthquake swarm builds up the range of magnitude," explains Wills. "Why we are seeing it, I don't know," he concludes.
A pattern Wills has seen before and says should be ending soon.
"I don't know of any of those that have actually built up and there is a bigger earthquake later
Reporting Elyce Kirchner
SACRAMENTO (CBS13) ― More than a thousand quakes have rumbled California and Nevada in the last month. CBS13 asks the question – What is causing the quakes?
It's been a busy week at the California Geological Survey. And with hundreds of earthquakes reported in California and Nevada this week, sure enough, when there's shaking there are theories.
"The depletion of the oil that is causing some potential quakes," says one scientist.
While earthquakes are caused when energy is released from fault lines, geologists Chris Wills says the quakes aren't uncommon or even connected, although they can be triggered.
"In several cases where people have been pumping things into the ground," says Wills.
But experts are still mystified by the swarm of quakes surrounding Reno, the strongest registering at 4.7.
"The earthquake swarm builds up the range of magnitude," explains Wills. "Why we are seeing it, I don't know," he concludes.
A pattern Wills has seen before and says should be ending soon.
"I don't know of any of those that have actually built up and there is a bigger earthquake later
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A 3.8 magnitude earthquake shook Reno Wednesday night
Just as Northwest Reno residents thought the major earthquake activity was finished, a 3.8 magnitude earthquake shook the region. The earthquake happened at 10:55 p.m. on Wednesday night. It was centered in the Verdi/Mogul area and was followed by a series of smaller earthquakes. People called the News 4 newsroom from across the Reno Sparks area to report the earthquake.
A 3.7 magnitude earthquake shook Eastern Nevada on Thursday morning. That earthquake was centered in Duckwater.
There are no reports of damage or injuries from either earthquake.
Northern Nevada has had thousands of earthquakes since a swarm of them started in February. Seismologists say Northern Nevada is due to have a big earthquake, but they have no way of predicting when or if it will happen.
Just as Northwest Reno residents thought the major earthquake activity was finished, a 3.8 magnitude earthquake shook the region. The earthquake happened at 10:55 p.m. on Wednesday night. It was centered in the Verdi/Mogul area and was followed by a series of smaller earthquakes. People called the News 4 newsroom from across the Reno Sparks area to report the earthquake.
A 3.7 magnitude earthquake shook Eastern Nevada on Thursday morning. That earthquake was centered in Duckwater.
There are no reports of damage or injuries from either earthquake.
Northern Nevada has had thousands of earthquakes since a swarm of them started in February. Seismologists say Northern Nevada is due to have a big earthquake, but they have no way of predicting when or if it will happen.
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Tracking down real-time earthquake info from this article:
Searching For Earthquakes
The Midwest Earthquake & Search Engine Responses
Visualize Earthquake Data In Google Earth
In fact, I've even been doing things on Twitter about quakes. Those being hit by them in Reno, I've pointed them to what I'm pretty sure is a real-time page about them. For a day last week, I also followed @socalquakes on Twitter after discovering it. That's the USGS itself twittering quakes in Southern California. For those in Northern California, check out @sfearthquakesand @sfquake.
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3 Frontiers in Earthquake Tech to Aid China—and Help the U.S.
From a string of GPS units embedded along the California faults to motion-sensor rigs deployed across Japan, researchers have already set their sights on the next generation of earthquake prevention. Could authorities in rural China have implemented new strategies to avert some of this week’s tragedy? And will a detection system for America’s aging infrastructure be ready before the next big one?
Rescue workers in China’s Sichuan province searched for survivors on Tuesday as researchers the world over continue to hunt for solutions. (Photograph by AFP via Getty Images)
When southeastern China was struck by a magnitude 7.9 earthquake two days ago, it was the latest in a string of disasters offered the world over by Mother Nature. Now it has unraveled into a full-blown crisis. The official death toll has passed 12,000, but experts believe it will climb beyond 18,000. A number of factors are contributing to the fatalities, such as blocked roadways and a series of at least 30 aftershocks in Sichuan province. The quake itself is no surprise—the region is well-known for its seismic activity—but the persistent threat of earthquakes and, despite decades of research, the lack of warning technology, is alarming. So what can scientists, engineers and lawmakers do to prepare for the next shockwave?
More of the story here
From a string of GPS units embedded along the California faults to motion-sensor rigs deployed across Japan, researchers have already set their sights on the next generation of earthquake prevention. Could authorities in rural China have implemented new strategies to avert some of this week’s tragedy? And will a detection system for America’s aging infrastructure be ready before the next big one?
Rescue workers in China’s Sichuan province searched for survivors on Tuesday as researchers the world over continue to hunt for solutions. (Photograph by AFP via Getty Images)
When southeastern China was struck by a magnitude 7.9 earthquake two days ago, it was the latest in a string of disasters offered the world over by Mother Nature. Now it has unraveled into a full-blown crisis. The official death toll has passed 12,000, but experts believe it will climb beyond 18,000. A number of factors are contributing to the fatalities, such as blocked roadways and a series of at least 30 aftershocks in Sichuan province. The quake itself is no surprise—the region is well-known for its seismic activity—but the persistent threat of earthquakes and, despite decades of research, the lack of warning technology, is alarming. So what can scientists, engineers and lawmakers do to prepare for the next shockwave?
More of the story here
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Calif. quake scientists detail impact of 'Big One'
Email this Story
May 21, 6:07 PM (ET)
By ALICIA CHANG
LOS ANGELES (AP) - The "Big One," as earthquake scientists imagine it in a detailed, first-of-its-kind script, unzips California's mighty San Andreas Fault north of the Mexican border. In less than two minutes, Los Angeles and its sprawling suburbs are shaking like a bowl of jelly.
The jolt from the 7.8-magnitude temblor lasts for three minutes - 15 times longer than the disastrous 1994 Northridge quake.
Water and sewer pipes crack. Power fails. Part of major highways break. Some high-rise steel frame buildings and older concrete and brick structures collapse.
Hospitals are swamped with 50,000 injured as all of Southern California reels from a blow on par with the Sept. 11 attacks and Hurricane Katrina: $200 billion in damage to the economy, and 1,800 dead.
Only about 700 of those people are victims of building collapses. Many others are lost to the 1,600 fires burning across the region - too many for firefighters to tackle at once.
A team of about 300 scientists, governments, first responders and industries worked for more than a year to create a realistic crisis scenario that can be used for preparedness, including a statewide drill planned later this year. Published by the U.S. Geological Survey and California Geological Survey, it is to be released Thursday in Washington, D.C.
Researchers caution that it is not a prediction, but the possibility of a major California quake in the next few decades is very real.
Last month, the USGS reported that the Golden State has a 46 percent chance of a 7.5 or larger quake in the next 30 years, and that such a quake probably would hit Southern California. The Northridge quake, which killed 72 people and caused $25 billion in damage, was much smaller at magnitude 6.7.
"We cannot keep on planning for Northridge," said USGS seismologist Lucy Jones. "The science tells that it's not the worst we're going to face."
USGS geophysicist Kenneth Hudnut said scientists wanted to create a plausible narrative and avoided science fiction like the 2004 TV miniseries "10.5" about an Armageddon quake on the West Coast.
"We didn't want to stretch credibility," said Hudnut. "We didn't want to make it a worst-case scenario, but one that would have major consequences."
The figures are based on the assumption that the state takes no continued action to retrofit flimsy buildings or update emergency plans. The projected loss is far less than the magnitude-7.9 killer that caused more than 40,000 deaths last week in western China, in part because California has stricter building code enforcement and retrofit programs.
The scenario is focused on the San Andreas Fault, the 800-mile boundary where the Pacific and North American plates grind against each other. The fault is the source of some of the largest earthquakes in state history, including the monstrous magnitude-7.8 quake that reduced San Francisco to ashes and killed 3,000 people in 1906.
In imagining the next "Big One," scientists considered the section of the San Andreas loaded with the most stored energy and the most primed to break. Most agree it's the southernmost segment, which has not popped since 1690, when it unleashed an estimated 7.7 jolt.
Scientists chose the parameters of the fictional temblor such as its size and length of rupture and ran computer models to simulate ground movement. Engineers calculated the effects of shaking on freeways, buildings, pipelines and other infrastructure. Risk analysts used the data to estimate casualties and damages.
A real quake would yield different results from the scenario, which excludes possibilities such as fierce Santa Ana winds that could whip fires into infernos.
The scenario: The San Andreas Fault suddenly rumbles to life on Nov. 13, 2008, just after morning rush hour. The quake begins north of the U.S.-Mexican border near the Salton Sea and the fault ruptures for about 200 miles in a northwest direction ending near the high desert town of Palmdale about 40 miles north of downtown Los Angeles.
Scientists chose the scenario because it would create intense shaking in the Los Angeles Basin and neighboring counties - a region with nearly 22 million people.
The scenario will be released at a House Subcommittee on Energy and Mineral Resources meeting in Washington.
Here are the major elements:
_10 a.m.: The San Andreas Fault ruptures, sending shock waves racing at 2 miles per second.
_30 seconds later: The agricultural Coachella Valley shakes first. Older buildings crumble. Fires start. Sections of Interstate 10, one of the nation's major east-west corridors, break apart.
_1 minute later: Interstate 15, a key north-south route, is severed in places. Rail lines break; a train derails. Tremors hit burgeoning Riverside and San Bernardino counties east of Los Angeles.
_1 minute, 30 seconds later: Shock waves advance toward the Los Angeles Basin, shaking it violently for 55 seconds.
_2 minutes later: The rupture stops near Palmdale, but waves march north toward coastal Santa Barbara and into the Central Valley city of Bakersfield.
_30 minutes later: Emergency responders begin to fan across the region. A magnitude-7 aftershock hits, but sends its energy south into Mexico. Several more big aftershocks will hit in following days and months.
Major fires following the quake would cause the most damage, said Keith Porter, of the University of Colorado, Boulder, who studied physical damage for the scenario.
The quake would likely spark 1,600 fires that would destroy 200 million square feet of housing and residential properties worth between $40 billion and $100 billion, according to the scenario.
Once the shaking stops, emergency responders would do a "windshield survey" that involves rolling through neighborhoods to tally damage and identify areas of greatest need, said Larry Collins, captain of the Urban Search & Rescue Task Force at the Los Angeles County Fire Department.
Collins said the scale of the disaster means firefighters would not be able to put out every flame.
"We're going to have to think about out-of-the-box solutions," he said.
Email this Story
May 21, 6:07 PM (ET)
By ALICIA CHANG
LOS ANGELES (AP) - The "Big One," as earthquake scientists imagine it in a detailed, first-of-its-kind script, unzips California's mighty San Andreas Fault north of the Mexican border. In less than two minutes, Los Angeles and its sprawling suburbs are shaking like a bowl of jelly.
The jolt from the 7.8-magnitude temblor lasts for three minutes - 15 times longer than the disastrous 1994 Northridge quake.
Water and sewer pipes crack. Power fails. Part of major highways break. Some high-rise steel frame buildings and older concrete and brick structures collapse.
Hospitals are swamped with 50,000 injured as all of Southern California reels from a blow on par with the Sept. 11 attacks and Hurricane Katrina: $200 billion in damage to the economy, and 1,800 dead.
Only about 700 of those people are victims of building collapses. Many others are lost to the 1,600 fires burning across the region - too many for firefighters to tackle at once.
A team of about 300 scientists, governments, first responders and industries worked for more than a year to create a realistic crisis scenario that can be used for preparedness, including a statewide drill planned later this year. Published by the U.S. Geological Survey and California Geological Survey, it is to be released Thursday in Washington, D.C.
Researchers caution that it is not a prediction, but the possibility of a major California quake in the next few decades is very real.
Last month, the USGS reported that the Golden State has a 46 percent chance of a 7.5 or larger quake in the next 30 years, and that such a quake probably would hit Southern California. The Northridge quake, which killed 72 people and caused $25 billion in damage, was much smaller at magnitude 6.7.
"We cannot keep on planning for Northridge," said USGS seismologist Lucy Jones. "The science tells that it's not the worst we're going to face."
USGS geophysicist Kenneth Hudnut said scientists wanted to create a plausible narrative and avoided science fiction like the 2004 TV miniseries "10.5" about an Armageddon quake on the West Coast.
"We didn't want to stretch credibility," said Hudnut. "We didn't want to make it a worst-case scenario, but one that would have major consequences."
The figures are based on the assumption that the state takes no continued action to retrofit flimsy buildings or update emergency plans. The projected loss is far less than the magnitude-7.9 killer that caused more than 40,000 deaths last week in western China, in part because California has stricter building code enforcement and retrofit programs.
The scenario is focused on the San Andreas Fault, the 800-mile boundary where the Pacific and North American plates grind against each other. The fault is the source of some of the largest earthquakes in state history, including the monstrous magnitude-7.8 quake that reduced San Francisco to ashes and killed 3,000 people in 1906.
In imagining the next "Big One," scientists considered the section of the San Andreas loaded with the most stored energy and the most primed to break. Most agree it's the southernmost segment, which has not popped since 1690, when it unleashed an estimated 7.7 jolt.
Scientists chose the parameters of the fictional temblor such as its size and length of rupture and ran computer models to simulate ground movement. Engineers calculated the effects of shaking on freeways, buildings, pipelines and other infrastructure. Risk analysts used the data to estimate casualties and damages.
A real quake would yield different results from the scenario, which excludes possibilities such as fierce Santa Ana winds that could whip fires into infernos.
The scenario: The San Andreas Fault suddenly rumbles to life on Nov. 13, 2008, just after morning rush hour. The quake begins north of the U.S.-Mexican border near the Salton Sea and the fault ruptures for about 200 miles in a northwest direction ending near the high desert town of Palmdale about 40 miles north of downtown Los Angeles.
Scientists chose the scenario because it would create intense shaking in the Los Angeles Basin and neighboring counties - a region with nearly 22 million people.
The scenario will be released at a House Subcommittee on Energy and Mineral Resources meeting in Washington.
Here are the major elements:
_10 a.m.: The San Andreas Fault ruptures, sending shock waves racing at 2 miles per second.
_30 seconds later: The agricultural Coachella Valley shakes first. Older buildings crumble. Fires start. Sections of Interstate 10, one of the nation's major east-west corridors, break apart.
_1 minute later: Interstate 15, a key north-south route, is severed in places. Rail lines break; a train derails. Tremors hit burgeoning Riverside and San Bernardino counties east of Los Angeles.
_1 minute, 30 seconds later: Shock waves advance toward the Los Angeles Basin, shaking it violently for 55 seconds.
_2 minutes later: The rupture stops near Palmdale, but waves march north toward coastal Santa Barbara and into the Central Valley city of Bakersfield.
_30 minutes later: Emergency responders begin to fan across the region. A magnitude-7 aftershock hits, but sends its energy south into Mexico. Several more big aftershocks will hit in following days and months.
Major fires following the quake would cause the most damage, said Keith Porter, of the University of Colorado, Boulder, who studied physical damage for the scenario.
The quake would likely spark 1,600 fires that would destroy 200 million square feet of housing and residential properties worth between $40 billion and $100 billion, according to the scenario.
Once the shaking stops, emergency responders would do a "windshield survey" that involves rolling through neighborhoods to tally damage and identify areas of greatest need, said Larry Collins, captain of the Urban Search & Rescue Task Force at the Los Angeles County Fire Department.
Collins said the scale of the disaster means firefighters would not be able to put out every flame.
"We're going to have to think about out-of-the-box solutions," he said.
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Large earthquake hits the Solomon Islands. 5.9 magnitude.
http://earthquake.usgs.gov/eqcenter/rec ... 08ska9.php
http://earthquake.usgs.gov/eqcenter/rec ... 08ska9.php
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http://www.breitbart.com/article.php?id ... _article=1
Quakes can be triggered from other side of globe: study
May 25 01:33 PM US/Eastern
A major quake such as the one that left at least 60,000 dead in southwestern China this month can trigger other earthquakes half way around the world, according to a study released Sunday.
This unexpected finding could one day help make better predictions about the frequency and intensity of aftershocks, the lead researcher told AFP.
A team of geologists in the United States found that 12 out of 15 major quakes -- registering a magnitude of 7.0 or higher -- since 1990 generated surface waves that set off smaller seismic events in fault systems on distant continents.
The China quake, which measured 8.0 on the Richter scale, was not included in the study, which was published in the British journal Nature Geoscience.
"It was known that these surface waves could travel," explained co-author Tom Parsons of the US Geological Survey.
"But most scientists thought these so-called dynamically-triggered earthquakes were a special case. In fact they happen all the time, everywhere, and that was something of a surprise," he said in a phone interview.
The terrible December 2004 mega-quake off the coast of Sumatra, Indonesia, for example, provoked seismic events as far away as Alaska, California and Ecuador.
There is a better than 95 percent likelihood that the earthquake rate in distant areas will be much higher in the immediate aftermath of a big quake than before or after, the study found.
And while the seismic movements triggered by far away quakes were generally smaller -- in the three-to-five magnitude range -- there is no reason they could not be as big or bigger than the first.
"They could be any size," said Parsons, who in previous research identified eight cases in the last quarter century in which a 7.0-or-bigger earthquake led to another that was even larger.
To measure the impact elsewhere on the planet of major tremblors, Parsons and colleagues analysed broadband seismographs from over 500 stations, part of a worldwide monitoring network.
By searching for the lowest frequencies and filtering out the highest, they detected a sharp increase in the number of distant quakes triggered by a main quake, even though the tectonic environment of the two regions were independent.
"The big question is aftershocks, and what happens after you have a big earthquake," said Parons, adding that there are two competing theories as to how such follow-on quakes are unleashed.
Static triggering occurs within a few fault lengths of the main rupture, often in a cascading effect. But impact generally peters out beyond a 100-to-200 kilometre (70-to-140 mile) radius.
The spike in quake activity further afield can only be explained by dynamic triggering, explained Parsons.
Such seismic waves travelling along the surface of the earth "keep their amplitude and do not diminish that much even over great distances," he said.
The key to predicting the aftermath of a quake such as the one in China will be teasing apart the role of static and dynamic triggering.
"We can look at the aftershocks and start to learn, but we need to know what percentage of those are dynamically triggered because the effect isn't lasting, it's transient," Parsons explained.
"Once those waves are gone, the effect is mostly over with, we really don't have to worry about that any more."
Quakes can be triggered from other side of globe: study
May 25 01:33 PM US/Eastern
A major quake such as the one that left at least 60,000 dead in southwestern China this month can trigger other earthquakes half way around the world, according to a study released Sunday.
This unexpected finding could one day help make better predictions about the frequency and intensity of aftershocks, the lead researcher told AFP.
A team of geologists in the United States found that 12 out of 15 major quakes -- registering a magnitude of 7.0 or higher -- since 1990 generated surface waves that set off smaller seismic events in fault systems on distant continents.
The China quake, which measured 8.0 on the Richter scale, was not included in the study, which was published in the British journal Nature Geoscience.
"It was known that these surface waves could travel," explained co-author Tom Parsons of the US Geological Survey.
"But most scientists thought these so-called dynamically-triggered earthquakes were a special case. In fact they happen all the time, everywhere, and that was something of a surprise," he said in a phone interview.
The terrible December 2004 mega-quake off the coast of Sumatra, Indonesia, for example, provoked seismic events as far away as Alaska, California and Ecuador.
There is a better than 95 percent likelihood that the earthquake rate in distant areas will be much higher in the immediate aftermath of a big quake than before or after, the study found.
And while the seismic movements triggered by far away quakes were generally smaller -- in the three-to-five magnitude range -- there is no reason they could not be as big or bigger than the first.
"They could be any size," said Parsons, who in previous research identified eight cases in the last quarter century in which a 7.0-or-bigger earthquake led to another that was even larger.
To measure the impact elsewhere on the planet of major tremblors, Parsons and colleagues analysed broadband seismographs from over 500 stations, part of a worldwide monitoring network.
By searching for the lowest frequencies and filtering out the highest, they detected a sharp increase in the number of distant quakes triggered by a main quake, even though the tectonic environment of the two regions were independent.
"The big question is aftershocks, and what happens after you have a big earthquake," said Parons, adding that there are two competing theories as to how such follow-on quakes are unleashed.
Static triggering occurs within a few fault lengths of the main rupture, often in a cascading effect. But impact generally peters out beyond a 100-to-200 kilometre (70-to-140 mile) radius.
The spike in quake activity further afield can only be explained by dynamic triggering, explained Parsons.
Such seismic waves travelling along the surface of the earth "keep their amplitude and do not diminish that much even over great distances," he said.
The key to predicting the aftermath of a quake such as the one in China will be teasing apart the role of static and dynamic triggering.
"We can look at the aftershocks and start to learn, but we need to know what percentage of those are dynamically triggered because the effect isn't lasting, it's transient," Parsons explained.
"Once those waves are gone, the effect is mostly over with, we really don't have to worry about that any more."
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Activity in the western edge of the Ring of Fire in the past week
Activity on Earth in the past week
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Re: Global Earthquake Watch
Magnitude 3.7 - NEW MEXICO
2008 June 04 14:02:42 UTC
Earthquake Details
Magnitude 3.7
Date-Time
* Wednesday, June 04, 2008 at 14:02:42 UTC
* Wednesday, June 04, 2008 at 08:02:42 AM at epicenter
* Time of Earthquake in other Time Zones
Location 36.512°N, 106.356°W
Depth 5 km (3.1 miles) set by location program
Region NEW MEXICO
Distances
* 47 km (29 miles) SSE (154°) from Chama, NM
* 54 km (34 miles) NNW (330°) from Alcalde, NM
* 57 km (36 miles) NNW (333°) from San Juan, NM
* 157 km (98 miles) N (8°) from Albuquerque, NM
* 378 km (235 miles) SSW (199°) from Denver, CO
Location Uncertainty horizontal +/- 9 km (5.6 miles); depth fixed by location program
Parameters NST= 17, Nph= 17, Dmin=156.6 km, Rmss=0.55 sec, Gp=155°,
M-type=local magnitude (ML), Version=Q
Source
* USGS NEIC (WDCS-D)
Event ID us2008swba
2008 June 04 14:02:42 UTC
Earthquake Details
Magnitude 3.7
Date-Time
* Wednesday, June 04, 2008 at 14:02:42 UTC
* Wednesday, June 04, 2008 at 08:02:42 AM at epicenter
* Time of Earthquake in other Time Zones
Location 36.512°N, 106.356°W
Depth 5 km (3.1 miles) set by location program
Region NEW MEXICO
Distances
* 47 km (29 miles) SSE (154°) from Chama, NM
* 54 km (34 miles) NNW (330°) from Alcalde, NM
* 57 km (36 miles) NNW (333°) from San Juan, NM
* 157 km (98 miles) N (8°) from Albuquerque, NM
* 378 km (235 miles) SSW (199°) from Denver, CO
Location Uncertainty horizontal +/- 9 km (5.6 miles); depth fixed by location program
Parameters NST= 17, Nph= 17, Dmin=156.6 km, Rmss=0.55 sec, Gp=155°,
M-type=local magnitude (ML), Version=Q
Source
* USGS NEIC (WDCS-D)
Event ID us2008swba
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Re: Global Earthquake Watch
Magnitude 3.9 - NORTHERN CALIFORNIA
2008 June 04 02:29:04 UTC
Earthquake Details
Magnitude 3.9
Date-Time
* Wednesday, June 04, 2008 at 02:29:04 UTC
* Tuesday, June 03, 2008 at 07:29:04 PM at epicenter
* Time of Earthquake in other Time Zones
Location 38.243°N, 122.181°W
Depth 10.8 km (6.7 miles)
Region NORTHERN CALIFORNIA
Distances
* 2 km (1 miles) SW (218°) from Green Valley, CA
* 10 km (6 miles) NE (37°) from American Canyon, CA
* 11 km (7 miles) W (261°) from Fairfield, CA
* 15 km (10 miles) NNE (18°) from Vallejo, CA
* 50 km (31 miles) N (5°) from Oakland, CA
Location Uncertainty horizontal +/- 0.3 km (0.2 miles); depth +/- 0.5 km (0.3 miles)
Parameters NST=178, Nph=178, Dmin=5 km, Rmss=0.27 sec, Gp= 97°,
M-type=local magnitude (ML), Version=2
Source
* California Integrated Seismic Net:
* USGS Caltech CGS UCB UCSD UNR
Event ID nc51203773
2008 June 04 02:29:04 UTC
Earthquake Details
Magnitude 3.9
Date-Time
* Wednesday, June 04, 2008 at 02:29:04 UTC
* Tuesday, June 03, 2008 at 07:29:04 PM at epicenter
* Time of Earthquake in other Time Zones
Location 38.243°N, 122.181°W
Depth 10.8 km (6.7 miles)
Region NORTHERN CALIFORNIA
Distances
* 2 km (1 miles) SW (218°) from Green Valley, CA
* 10 km (6 miles) NE (37°) from American Canyon, CA
* 11 km (7 miles) W (261°) from Fairfield, CA
* 15 km (10 miles) NNE (18°) from Vallejo, CA
* 50 km (31 miles) N (5°) from Oakland, CA
Location Uncertainty horizontal +/- 0.3 km (0.2 miles); depth +/- 0.5 km (0.3 miles)
Parameters NST=178, Nph=178, Dmin=5 km, Rmss=0.27 sec, Gp= 97°,
M-type=local magnitude (ML), Version=2
Source
* California Integrated Seismic Net:
* USGS Caltech CGS UCB UCSD UNR
Event ID nc51203773
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Re: Global Earthquake Watch
Magnitude 3.6 - ILLINOIS
2008 June 05 07:13:14 UTC
Earthquake Details
Magnitude 3.6
Date-Time
* Thursday, June 05, 2008 at 07:13:14 UTC
* Thursday, June 05, 2008 at 02:13:14 AM at epicenter
* Time of Earthquake in other Time Zones
Location 38.444°N, 87.839°W
Depth 5 km (3.1 miles) set by location program
Region ILLINOIS
Distances
* 7 km (4 miles) WNW (298°) from Mount Carmel, IL
* 9 km (6 miles) NE (43°) from Bellmont, IL
* 11 km (7 miles) NNE (14°) from Keensburg, IL
* 58 km (36 miles) NNW (334°) from Evansville, IN
* 210 km (131 miles) E (95°) from St. Louis, MO
Location Uncertainty horizontal +/- 4.7 km (2.9 miles); depth fixed by location program
Parameters NST= 28, Nph= 28, Dmin=39.4 km, Rmss=0.85 sec, Gp= 86°,
M-type="Nuttli" surface wave magnitude (MLg), Version=9
Source
* USGS NEIC (WDCS-D)
Event ID us2008sxba
* This event has been reviewed by a seismologist.
2008 June 05 07:13:14 UTC
Earthquake Details
Magnitude 3.6
Date-Time
* Thursday, June 05, 2008 at 07:13:14 UTC
* Thursday, June 05, 2008 at 02:13:14 AM at epicenter
* Time of Earthquake in other Time Zones
Location 38.444°N, 87.839°W
Depth 5 km (3.1 miles) set by location program
Region ILLINOIS
Distances
* 7 km (4 miles) WNW (298°) from Mount Carmel, IL
* 9 km (6 miles) NE (43°) from Bellmont, IL
* 11 km (7 miles) NNE (14°) from Keensburg, IL
* 58 km (36 miles) NNW (334°) from Evansville, IN
* 210 km (131 miles) E (95°) from St. Louis, MO
Location Uncertainty horizontal +/- 4.7 km (2.9 miles); depth fixed by location program
Parameters NST= 28, Nph= 28, Dmin=39.4 km, Rmss=0.85 sec, Gp= 86°,
M-type="Nuttli" surface wave magnitude (MLg), Version=9
Source
* USGS NEIC (WDCS-D)
Event ID us2008sxba
* This event has been reviewed by a seismologist.
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Re: Global Earthquake Watch
Magnitude 3.5 - ARIZONA
2008 June 04 23:32:35 UTC
Earthquake Details
Magnitude 3.5
Date-Time Wednesday, June 04, 2008 at 23:32:35 UTC
Wednesday, June 04, 2008 at 04:32:35 PM at epicenter
Time of Earthquake in other Time Zones
Location 36.386°N, 112.591°W
Depth 5 km (3.1 miles) set by location program
Region ARIZONA
Distances 20 km (13 miles) NNE (27°) from Supai, AZ
55 km (34 miles) NW (313°) from Grand Canyon Village, AZ
59 km (37 miles) S (173°) from Kaibab, AZ
141 km (88 miles) ESE (109°) from Mesquite, NV
237 km (147 miles) E (84°) from Las Vegas, NV
Location Uncertainty horizontal +/- 6.7 km (4.2 miles); depth fixed by location program
Parameters NST= 13, Nph= 13, Dmin=146 km, Rmss=0.61 sec, Gp= 94°,
M-type=local magnitude (ML), Version=7
Source USGS NEIC (WDCS-D)
Event ID us2008swc5
This event has been reviewed by a seismologist.
2008 June 04 23:32:35 UTC
Earthquake Details
Magnitude 3.5
Date-Time Wednesday, June 04, 2008 at 23:32:35 UTC
Wednesday, June 04, 2008 at 04:32:35 PM at epicenter
Time of Earthquake in other Time Zones
Location 36.386°N, 112.591°W
Depth 5 km (3.1 miles) set by location program
Region ARIZONA
Distances 20 km (13 miles) NNE (27°) from Supai, AZ
55 km (34 miles) NW (313°) from Grand Canyon Village, AZ
59 km (37 miles) S (173°) from Kaibab, AZ
141 km (88 miles) ESE (109°) from Mesquite, NV
237 km (147 miles) E (84°) from Las Vegas, NV
Location Uncertainty horizontal +/- 6.7 km (4.2 miles); depth fixed by location program
Parameters NST= 13, Nph= 13, Dmin=146 km, Rmss=0.61 sec, Gp= 94°,
M-type=local magnitude (ML), Version=7
Source USGS NEIC (WDCS-D)
Event ID us2008swc5
This event has been reviewed by a seismologist.
0 likes
Re: Global Earthquake Watch
Magnitude 3.5 - SAN FRANCISCO BAY AREA, CALIFORNIA
2008 June 06 09:02:53 UTC
Earthquake Details
Magnitude 3.5
Date-Time
* Friday, June 06, 2008 at 09:02:53 UTC
* Friday, June 06, 2008 at 02:02:53 AM at epicenter
* Time of Earthquake in other Time Zones
Location 37.818°N, 122.069°W
Depth 7.7 km (4.8 miles)
Region SAN FRANCISCO BAY AREA, CALIFORNIA
Distances
* 6 km (4 miles) ESE (120°) from Moraga, CA
* 6 km (4 miles) SW (215°) from Alamo, CA
* 8 km (5 miles) W (275°) from Danville, CA
* 14 km (9 miles) E (80°) from Oakland, CA
Location Uncertainty horizontal +/- 0.1 km (0.1 miles); depth +/- 0.3 km (0.2 miles)
Parameters NST=182, Nph=182, Dmin=8 km, Rmss=0.12 sec, Gp= 40°,
M-type=local magnitude (ML), Version=2
Source
* California Integrated Seismic Net:
* USGS Caltech CGS UCB UCSD UNR
Event ID nc51203888
* This event has been reviewed by a seismologist.
2008 June 06 09:02:53 UTC
Earthquake Details
Magnitude 3.5
Date-Time
* Friday, June 06, 2008 at 09:02:53 UTC
* Friday, June 06, 2008 at 02:02:53 AM at epicenter
* Time of Earthquake in other Time Zones
Location 37.818°N, 122.069°W
Depth 7.7 km (4.8 miles)
Region SAN FRANCISCO BAY AREA, CALIFORNIA
Distances
* 6 km (4 miles) ESE (120°) from Moraga, CA
* 6 km (4 miles) SW (215°) from Alamo, CA
* 8 km (5 miles) W (275°) from Danville, CA
* 14 km (9 miles) E (80°) from Oakland, CA
Location Uncertainty horizontal +/- 0.1 km (0.1 miles); depth +/- 0.3 km (0.2 miles)
Parameters NST=182, Nph=182, Dmin=8 km, Rmss=0.12 sec, Gp= 40°,
M-type=local magnitude (ML), Version=2
Source
* California Integrated Seismic Net:
* USGS Caltech CGS UCB UCSD UNR
Event ID nc51203888
* This event has been reviewed by a seismologist.
0 likes
Re: Global Earthquake Watch
Something's Shaking in Antarctica
By Douglas Fox
ScienceNOW Daily News
4 June 2008
Scientists have discovered massive, slow-motion "ice quakes" trembling twice a day through the West Antarctic Ice Sheet, an Alaska-sized swath of Antarctica. Detective work has traced the source of the shaking to the Whillans Ice Stream, a glacier 100 kilometers across and 1 kilometer thick, which flows from the ice sheet's interior.
It may seem strange that magnitude-7 quakes went unnoticed for so long--a temblor of similar size leveled entire towns and killed at least 15,000 in Turkey in 1999--but people standing on the Whillans Ice Stream never notice the shaking. "The reason that it doesn't rattle the whole continent is that it's a very slow event," says Sridhar Anandakrishnan, a glaciologist at Pennsylvania State University in State College, who made the discovery along with Douglas Wiens, a seismologist at Washington University in St. Louis, Missouri. Normal earthquakes release their energy over a few seconds, but the Whillans's shaking unfolds over 20 minutes.
Wiens first noticed the ice quakes 3 years ago as he analyzed data from 43 seismic sensors across Antarctica. Hoping for faint signals that would help him pinpoint previously unknown faults, he was instead greeted by booming vibrations from the same spot in West Antarctica. Wiens then looked at seismic data collected in 2004, the same year that Anandakrishnan had deployed 16 GPS sensors on the Whillans Ice Stream that tracked the ice's movement every 10 seconds. Most glaciers edge forward continuously, but the Whillans was already known to behave bizarrely: It sits still most of the time, then surges more than a half-meter forward twice per day as ocean tides lift and lower a slab of floating ice that extends from the end of the glacier onto the Ross Sea, just off the coast of Antarctica. By combining the GPS and seismic data, the researchers saw that the ice quakes and glacial surges synchronized perfectly in time, suggesting that the shaking was caused by the ice grinding over a rough spot in the rock below, they report 5 June in Nature.
Finding the causes of ice quakes--which also occur in Greenland--could lead to better understanding glacial movement and improved models of how glaciers will respond to climate change, says Robert Bindschadler, a glaciologist at NASA Goddard Space Flight Center in Greenbelt, Maryland, who first reported the twice-daily surges of the Whillans Ice Stream in 2003. "What has come from these discoveries is a realization that glaciers have other modes of behavior than we have thought of previously," says Göran Ekström, a seismologist with Columbia University.
By Douglas Fox
ScienceNOW Daily News
4 June 2008
Scientists have discovered massive, slow-motion "ice quakes" trembling twice a day through the West Antarctic Ice Sheet, an Alaska-sized swath of Antarctica. Detective work has traced the source of the shaking to the Whillans Ice Stream, a glacier 100 kilometers across and 1 kilometer thick, which flows from the ice sheet's interior.
It may seem strange that magnitude-7 quakes went unnoticed for so long--a temblor of similar size leveled entire towns and killed at least 15,000 in Turkey in 1999--but people standing on the Whillans Ice Stream never notice the shaking. "The reason that it doesn't rattle the whole continent is that it's a very slow event," says Sridhar Anandakrishnan, a glaciologist at Pennsylvania State University in State College, who made the discovery along with Douglas Wiens, a seismologist at Washington University in St. Louis, Missouri. Normal earthquakes release their energy over a few seconds, but the Whillans's shaking unfolds over 20 minutes.
Wiens first noticed the ice quakes 3 years ago as he analyzed data from 43 seismic sensors across Antarctica. Hoping for faint signals that would help him pinpoint previously unknown faults, he was instead greeted by booming vibrations from the same spot in West Antarctica. Wiens then looked at seismic data collected in 2004, the same year that Anandakrishnan had deployed 16 GPS sensors on the Whillans Ice Stream that tracked the ice's movement every 10 seconds. Most glaciers edge forward continuously, but the Whillans was already known to behave bizarrely: It sits still most of the time, then surges more than a half-meter forward twice per day as ocean tides lift and lower a slab of floating ice that extends from the end of the glacier onto the Ross Sea, just off the coast of Antarctica. By combining the GPS and seismic data, the researchers saw that the ice quakes and glacial surges synchronized perfectly in time, suggesting that the shaking was caused by the ice grinding over a rough spot in the rock below, they report 5 June in Nature.
Finding the causes of ice quakes--which also occur in Greenland--could lead to better understanding glacial movement and improved models of how glaciers will respond to climate change, says Robert Bindschadler, a glaciologist at NASA Goddard Space Flight Center in Greenbelt, Maryland, who first reported the twice-daily surges of the Whillans Ice Stream in 2003. "What has come from these discoveries is a realization that glaciers have other modes of behavior than we have thought of previously," says Göran Ekström, a seismologist with Columbia University.
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Re: Global Earthquake Watch
Magnitude 3.1 - OKLAHOMA
2008 June 09 22:59:46 UTC
Earthquake Details
Magnitude 3.1
Date-Time
* Monday, June 09, 2008 at 22:59:46 UTC
* Monday, June 09, 2008 at 05:59:46 PM at epicenter
* Time of Earthquake in other Time Zones
Location 35.851°N, 96.981°W
Depth 5 km (3.1 miles) set by location program
Region OKLAHOMA
Distances
* 3 km (2 miles) SW (214°) from Tryon, OK
* 6 km (4 miles) NNE (30°) from Carney, OK
* 11 km (7 miles) WSW (244°) from Agra, OK
* 65 km (40 miles) NE (51°) from Oklahoma City, OK
* 340 km (211 miles) N (357°) from Dallas, TX
Location Uncertainty horizontal +/- 31.3 km (19.4 miles); depth fixed by location program
Parameters NST= 5, Nph= 5, Dmin=64.4 km, Rmss=0.37 sec, Gp=212°,
M-type=duration magnitude (Md), Version=T
Source
* USGS NEIC (WDCS-D)
Event ID us2008tbcq
* This event has been reviewed by a seismologist.
2008 June 09 22:59:46 UTC
Earthquake Details
Magnitude 3.1
Date-Time
* Monday, June 09, 2008 at 22:59:46 UTC
* Monday, June 09, 2008 at 05:59:46 PM at epicenter
* Time of Earthquake in other Time Zones
Location 35.851°N, 96.981°W
Depth 5 km (3.1 miles) set by location program
Region OKLAHOMA
Distances
* 3 km (2 miles) SW (214°) from Tryon, OK
* 6 km (4 miles) NNE (30°) from Carney, OK
* 11 km (7 miles) WSW (244°) from Agra, OK
* 65 km (40 miles) NE (51°) from Oklahoma City, OK
* 340 km (211 miles) N (357°) from Dallas, TX
Location Uncertainty horizontal +/- 31.3 km (19.4 miles); depth fixed by location program
Parameters NST= 5, Nph= 5, Dmin=64.4 km, Rmss=0.37 sec, Gp=212°,
M-type=duration magnitude (Md), Version=T
Source
* USGS NEIC (WDCS-D)
Event ID us2008tbcq
* This event has been reviewed by a seismologist.
0 likes
Re: Global Earthquake Watch
Here's a weird place for an earthquake.
Magnitude 4.6 - POLAND
2008 June 13 04:13:30 UTC
Earthquake Details
Magnitude 4.6
Date-Time
* Friday, June 13, 2008 at 04:13:30 UTC
* Friday, June 13, 2008 at 06:13:30 AM at epicenter
* Time of Earthquake in other Time Zones
Location 51.454°N, 16.153°E
Depth 5 km (3.1 miles) set by location program
Region POLAND
Distances 70 km (45 miles) NW of Wroclaw, Poland
120 km (75 miles) SSW of Poznan, Poland
130 km (80 miles) ESE of Cottbus, Germany
345 km (215 miles) WSW of WARSAW, Poland
Location Uncertainty horizontal +/- 5.6 km (3.5 miles); depth fixed by location program
Parameters NST= 44, Nph= 44, Dmin=199.3 km, Rmss=0.94 sec, Gp= 83°,
M-type=body magnitude (Mb), Version=Q
Source
Event ID us2008tfak
* This event has been reviewed by a seismologist.
Magnitude 4.6 - POLAND
2008 June 13 04:13:30 UTC
Earthquake Details
Magnitude 4.6
Date-Time
* Friday, June 13, 2008 at 04:13:30 UTC
* Friday, June 13, 2008 at 06:13:30 AM at epicenter
* Time of Earthquake in other Time Zones
Location 51.454°N, 16.153°E
Depth 5 km (3.1 miles) set by location program
Region POLAND
Distances 70 km (45 miles) NW of Wroclaw, Poland
120 km (75 miles) SSW of Poznan, Poland
130 km (80 miles) ESE of Cottbus, Germany
345 km (215 miles) WSW of WARSAW, Poland
Location Uncertainty horizontal +/- 5.6 km (3.5 miles); depth fixed by location program
Parameters NST= 44, Nph= 44, Dmin=199.3 km, Rmss=0.94 sec, Gp= 83°,
M-type=body magnitude (Mb), Version=Q
Source
Event ID us2008tfak
* This event has been reviewed by a seismologist.
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